QUOTE : Having obtained your design, and buried your rocks, your next task is to exercise phenomenal restraint about the things which you put in. I have always been a fervent advocate of birth-control, but since I have been the owner of a rock garden my fervour has increased a hundred-fold. The prolificacy of the common saxifrage is positively embarrassing. The speed with which the rock rose reproduces itself brings a blush to the cheek. Violas appear to have absolutely no self-control, and as for the alyssum . . . well, if we behaved like the alyssum, Australia would be over-populated before the year is out.